<!DOCTYPE html>
<link rel="author" title="David Shin" href="dshin@mozilla.com">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1871609">
<style>
table {
  border-collapse: collapse;
}
tr {
  border: 1px solid grey;
}
</style>
<table>
  <tr>
    <td>X</td>
    <td>X</td>
  </tr>
</table>
